RESEARCH OF INFLUENCE OF DESIGN DATA ON AN OVERALL PERFORMANCE OF COAXIAL HEAT EXCHANGERS
Abstract
In work results of research of influence of design data on an overall performance of coaxial heat exchangers are resulted. The carried out experime ntal and theoretical researches have revealed, that the increase in a backlash and temperature of a cooling liquid leads to growth of final temperature of a cooled liquid. The frequency rate increase leads to decrease in temperature of a cooled liquid. Dependence of hydraulic resistance on backlash size has strongly pronounced return character. Dependence of hydraulic resistance on frequency rate of giving linear, correlation between these variables the positive. The received equations of regress have allowed to define optimum parametres of work. At desirable size of final temperature 4 °С – a backlash between pipes of 2,3 mm, frequency rate of a cooling liquid 4, temperature of a cooling liquid 0,7 °С, settlement hydraulic resistance 15 kPa. The executed calculations have shown, that at association of several heat exchangers in one installation it is expedient to connect them consistently on a product.
References
1. Шлихтинг, Г. Теория пограничного слоя / Г. Шлихтинг – М.: Наука, 1974. – 712 с.
2. Кутателадзе, С. С. Основы теории теплообмена / С.С. Кутателадзе - М.: Атомиздат, 1979. – 416 с.
3. Shah, R. K. TN Report of Harrison Radiator Division, General Motors Co., 1976.
4. Приближенное решение операторных уравнений / М. А. Красносельский [и др.]. – М.: Наука, 1969. – 455 c.
5. Дымар, О.В. Методика теплового и гидравлического расчета коаксиальных теплообменных аппаратов / О.В. Дымар, В.А. Бабенко // Актуальные вопросы переработки мясного и молочного сырья: сб. научн. тр. / РУП «Институт мясо–молочной промышленности», Минск, 2007. –с. 151–161.
Review
For citations:
O. Dymar O. RESEARCH OF INFLUENCE OF DESIGN DATA ON AN OVERALL PERFORMANCE OF COAXIAL HEAT EXCHANGERS. Topical Issues of Processing of Meat and Milk Raw Materials. 2009;(4):16-27. (In Russ.)
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